Death.

if u're not emotionally attached to someone its perfectly normal to not feel sorrow when they die, whether its a pet or a family member..

I couldn't care less too, I'm already in hell, so I can't feel sorry for others going there for the first time...

It's normal. There's nothing you can do, nothing that will improve the situation any, so being numb is as good a reaction as any. For a lot of people, grief isn't a constant thing and life goes on like normal except for those random times it sneaks up on you.

A lot of people don't know how to feel towards death because we've never experienced it. It's totally confusing in many ways. Sometimes it doesn't even seem real. It can be difficult to wrap your mind around the fact that a person or a dog in this case is here one day and gone the next, but never returning in any way, shape or form. To exist one moment and not the next is truly beyond our capabilities as humans to fully comprehend, no matter how OK we think we are with death.

I also think the brunt of the pain that accompanies loss is often delayed. It takes a while for the true meaning of death to hit you, but when it does you never can be quite sure what you'll feel.

I don't like looking in the obituaries and seeing that somebody close to my age has died.

Dude, I'm with you on this one. I've experienced the deaths of a close friend, as well as my grandfather in the past 3 years. I had a hard time being phased by either event. I had to force myself to feel upset. And I really liked both of these people...

Everyone of us will experience it eventually.